Why are toilets not joined to the main plumbing via a dedicated, leak proof joint? Something that latches into the toilet and is sealed? Automotive, aircraft, and other industries have high pressure fluid lines. Could someone conceive of an improvement to the current toilet connection?
In: Engineering
Something else to keep in mind is that the shit pipe isn’t (usually) pressurized with a traditional toilet you’d sit with a wax ring, unlike the examples you cited where they’re under pressure (even 5 psi is a lot to contain). All the wax seal has to do is keep the water from leaking out of the pipe, and the water and shit just kinda drains down with gravity.
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